Mixing-drum.



J. W. CUMISKEY.

vMIXING DRUM. v APPLIOATION FIILBD APR.26, 1907.

.Patented July 20, 1909.

l 00 ov WLM/meow -v v l specili cation.

JOHN w. cometer, or vocNesTowi-ii, OHIO.

gnixrirennon.

Speciicationfpf Letters Patent.

Application filed April 26, 19,07. :Serial No. 370,402.

To all 'whom it may concer-n.'

Be it known that I, JOHN W. CUMisKEY, a citizen of the -United States, residing at Youngstown, in the county of' Mahoning and State of Ohio, have invented a new and useful Mixing-Drum, oi which the following is a The present invention relates more particule rly to batch mixing drums vemployed iii mixing concrete and other materials;

The principal object ofthe present invention is to provide novel means of a simple nature that can be easily constructed, will thoroughly agitate the material, has a coniparatively low spilling line, and' may be mad e of comparativelysmall diameter without deleteriously affecting its capability of thoroughly mixing the ingredients of the batch pla-ced therein.

lhe preferred form of construction oi' the druni is illustrated in the accompanying drawings, wherein:

Figure l is a side elevation thereof. Fig. 2 is an end elevation Of the drum. Fig. 3 is a longitudinalsectional view therethrough.. Fig. l is a cross sectional view. l

Similar reference numerals designate corresponding parts in all the figures of the drawings.

'.lhe drum, as constructed,- coiisists of an oblongl body portion 5 with tapered' end portions (5 that are in the forni 'of irustunis of pyramids. The drum is formed oi' a series ol sections, each section extending from one end ol' the drum to the other having .an oblong or rectangular body portion 7 and tapered ends 8, the ends being bent so that they are located in angulai'relation to the body portions. These various sections are arranged edge to edge, andthey are rigidly connected together Aand the joints between them made watertight by suitable means, such as angle bai-s 9 located outside the druin and having their' flanges secured to the adj acent margins by rivets 10 or other fasteners. As a result, an exceedingly strong and durabley body is provided consisting of a series of 'igularly disposed ilat faces. The drum is designed to rotate on an axis centrally through the open ends thereof and either end may be used as the entrance. for the material to be mixed and the other end as the outlet for the mixed material.

Arranged within the body portions are two sots of wings or blades, designated l1. A pair of these wings or blades are carried by each body portion 7, being secured thereto by angle brackets 12. It Will be observed that the blades-Ot each pair are. spaced apart and arranged in opposite angular relation so that corresponding blades of both sets form an elevating bucket whiehacts to liftvk a portion of the material by the rotation ofthe. drum and allows such portion ofthe material to gradually fall back to the bottom of the drum so that a thorough mixing action is produced. The tapered ends ofthe drum serve to crowd the material inwardly toward and between the blades. The blades are of comparatively great width, 'and consci# quently act throughout the body ofthe material placed in the drum. To be inore d'giplici't, the blades are in pairs, those of each pair be- Patenrea July 20, .1969. i

ing at an opposite inclination, and Amounted 4on the iat central portion of the drum.

Moreover they converge toward the center of the drum, and are s aced apart both lat'- erally and longitudinally. Y

l-roiinthe foregoing', it is thought that the construction, operation, and many advantages of the 'herein described invention will beapparent to those skilled in the artfwithout further description, and it will be underl stood that various changes in the size, shape, proportion, and minor details ofconstriiction, may be resorted to Without departing from the spirit or sacrificing any of ,the advantages of the invention.

Having thus fully described my invention, l what Iclaim las new, and desire to'sccuie by- Letters Patent, isr- 11Al mixing drum comprising a hollow structure l0 en at both ends and composedfof 'y i a polygona rbody portion and frustuni end portions arranged with their axes coincident with the axis of the body ortion, said A. structure ,consisting of a'plura ty einigem,... bers or sections extending longitudinallyfroni one end to the other and eachfbjeingf wider at the centralportion and tapering therefrom to the extremities and the taper# ice ing extremities being bent at an angle to the central wider portion, s aidniembersbeing".v arranged side by side with the longitudinal:

edges ol adjacent members meeting, means for rigidly securing adjacent members to? -f gether and forming liquid-tight joints" be-v tween theni, and a plurality of internalA blades arranged in two sets*v and secured around the inside of the body ortion of the [ilo said structure, the sets boing isposed syiiil Y nietrically to each other and at opposite' structure consisting of a plura 'ty of mem- Stiens, these sections being disposed edge to the sections and secured to the margins of "said sections, o posite angularly disposed spaced stirrer b ades secured .to the inner sides of each of the different body Walls, and

structure o en at both ends and composed of j from one end of the drum to the other and sides lof the median transverse plane of the structure, each-member having a pair of the said blades and the latter being arranged obliquely to each other to form together a bucket-like element.

2. A mixing drum of the character described, comprising a polygonal body 'having tapered end ortions that are substantially in the form ol) frustums of pyramids having open outer ends, said body consisting of sections that comprise rectangular flat body portions-and tapered iiat end portions disposed in angular relation to the body poredge, vangle bars bridging the joints between anglebrackets-fastening said blades'to the said walls.

.3. A mixing drum comprising a.V hollow a polygona body portion and frustum end portions arran ed with their axes coincident to the axls of the body ortion, -said bers or sections extending longitudinally each being wider at the central portion and tapering therefrom to the extremities, the tapering extremities being bent at an angle to the central Wider portion, said members being arranged side by side and connected together, and a plurality of internal blades arranged in two sets and secured around the inside of the body portion of the said structure, the sets being disposed symmetrically toeach other and at opposite sides of the median transverse plane of the structure, each member having a pair of the said blades and the latter being arranged obliquely to each other to form together a bucket-like element.

4. A mixing drum ofthe character described, comprising a olygonal body having equal 'flat sides, said ody having outer end portions substantially in the form of frusto pyramids having open outer ends, said body consisting of sections that comprise llat plates,each plate forming' a side of the body, said plates being disposed edge to edge and secured to each other by exterior anglo irons, the end portions comprising tapered flat plates disposed in angular relation to the plates forming the body and being located edge to edge to each other, angle irons connecting the end plates to each other and to the body portion, and opposed, laterally separated, angularly disposed stirrer blades secured to the inner faces of each of the body plates.

In testimony, that Iclaim' the foregoing my own, I have hereto atlixed my signature in the presence of two witnesses.

Jol-1N W. oUMrsxnY.

Witnesses:

R. C. HUEY, J. W, ROGERS. 

